Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Electric field on two charged spheres
- Nivlac2425
- · Replies 5 ·
Physics Special Relativity Time Dilation Question?
- justinh8
- · Replies 13 ·
Why is an adiabatic curve steeper than an isotherm at the same point?
- channel1
- · Replies 4 ·
Change in Density due to Temperature and Pressure Change
- JSGandora
- · Replies 6 ·
Solving Friction Problem 3: Initial Velocity of Object
- -Physician
- · Replies 3 ·
Comparing |C| and |A-B| when angle between A and B is 120°
- jobsism
- · Replies 4 ·
Gravitational Force Due to Infinitely Long Rod
- teroenza
- · Replies 13 ·
Friction in vertical directions
- moonbase
- · Replies 2 ·
Electric Field of a quarter circle segment
- btpolk
- · Replies 9 ·
SHM piston: is amplitude half the stroke or the full stroke?
- richyr33
- · Replies 8 ·
Thermodynamics with styrofoam cooler
- physikx
- · Replies 3 ·
Need a check on a elevator going up problem
- Dko
- · Replies 3 ·
Work to move charge between potentials and electron speed near point charge
- jhcollaz
- · Replies 1 ·
What is the speed of each marble immediately after the collision?
- ScienceGeek24
- · Replies 4 ·
Electric field from potential V= -x*y^2+z
- btpolk
- · Replies 6 ·
Length Contraction and Time Dilation in Relativity: An Electron's Perspective
- RichardT
- · Replies 1 ·
Power Calculation for Three Resistors in a Circuit
- shortman12012
- · Replies 1 ·
Estimating Work for Rotating a Ferris Wheel
- girlphysics
- · Replies 30 ·
Work of gravitational attraction based on height
- aarop2
- · Replies 1 ·
How Does Special Relativity Affect the Angle of a Meter Stick in a Moving Frame?
- icantsee99
- · Replies 5 ·
How Does the Electric Field Vary Along the Axis of an Annulus?
- nateja
- · Replies 7 ·
What is an indirect proof for the theorem: If n^2+1 is odd, then n is even?
- Darkrise666
- · Replies 1 ·
Science Fair - Why perpertual motion won't work.
- cookiepoppers
- · Replies 3 ·
Positronium Decay: Find Momentum of Gamma Rays
- Newtime
- · Replies 1 ·
Force needed to move a desk with static friction 0.86
- -Physician
- · Replies 6 ·
Solve Friction Problem: Find Force w/ Coefficient 0.3
- -Physician
- · Replies 5 ·
How does a radar gun determine velocity?
- chiddler
- · Replies 4 ·
How Close Can a Proton Get to a Charged Sphere?
- AnthroMecha
- · Replies 4 ·
Gravitational Acceleration at Different Latitudes
- duggielanger
- · Replies 5 ·
Calculating velocity, time, and Instantaneous speed using kinematic equations
- Absolutism
- · Replies 5 ·
Finding the Force Applied to a Partner Swinging at 4.25 m/s
- jowofoto
- · Replies 1 ·
Finding the position vector of uniform circular motion
- LavastormSW
- · Replies 1 ·
Finding voltage difference Vc - Vd in circuit with nodal analysis
- lazyaditya
- · Replies 3 ·
Is the statement 'Particle A has twice the charge of particle B' true or false?
- btpolk
- · Replies 2 ·
Voltage: Does Magnitude Affect Electric Field Direction?
- Miike012
- · Replies 1 ·
How Much Energy Is Needed to Heat a Saucepan and Water?
- randomkent
- · Replies 6 ·
Resistor network question Cant get it
- biochemguy
- · Replies 15 ·
What is the method to calculate the center of mass for a system of particles?
- Dr.House0
- · Replies 3 ·
What Do the Total Aram Values (0.74, 1.58) Represent?
- Dr.House0
- · Replies 3 ·
Maxiumum speed of a cork on a wave
- thoradicus
- · Replies 4 ·
Electric field by a current carrying wire
- jaobyccdee
- · Replies 5 ·
Newtons 2nd law problem - how to interpret the break force
- scienalc
- · Replies 4 ·
If an object is moving in a straight line and it has uniform motion
- zoomzoom
- · Replies 3 ·
Derive wave velocity equation from wavelength, surface tension and density
- ahmedb
- · Replies 1 ·
(Kinematics) Choose the correct statements :
- devvaibhav
- · Replies 8 ·
Component acceleration in free-body diagram
- octowilli
- · Replies 3 ·
What is the Speed of the Car Based on the Doppler Effect of Sound?
- Kinar
- · Replies 2 ·
You throw several coins into a pool for a diving game
- nomalware80
- · Replies 1 ·
How is this supposed to be read?
- brotivation
- · Replies 2 ·
Find velocity at a specific time?
- treyh
- · Replies 1 ·
Banked curves, coefficient of friction problem
- a321
- · Replies 1 ·
Torque Equilibrium and Elasticity problem
- Elysian
- · Replies 1 ·
Principle of Work and Energy: Spring and Mass
- Peter P.
- · Replies 1 ·
How Far Will a Box Slide Before Stopping on a Frictional Surface?
- PinkFly
- · Replies 1 ·
Braking distance of a car(forces and friction)
- chaotiiic
- · Replies 3 ·
Polarization of a Ideal Fermi Gas
- L_McGrady
- · Replies 9 ·
Calculating Net Electric Field
- BornSurvivor
- · Replies 5 ·
Comparing resistance of uniform vs tapered wire
- chicagobears
- · Replies 6 ·
What is the expected roundtrip travel time if a wind is present?
- Crazysah
- · Replies 2 ·
Force (potential, I think) to Kinetic Energy - Two charges
- gulz
- · Replies 1 ·
Energy Required To Knock Something Over
- sjd0004
- · Replies 7 ·
Velocity of a ball (kg) droped from height (m)
- Pippa9
- · Replies 2 ·
How Far Does Light Travel in 83.8 Hours?
- cwalker8184
- · Replies 3 ·
Curent densitys relation to drift velocity
- DODGEVIPER13
- · Replies 7 ·
Thin Lens Problem: Solving for Object Distance w/ Magnification
- LastXdeth
- · Replies 5 ·
Calculating Photon Energy given Luminosity
- WRoach
- · Replies 3 ·
How Is Velocity Calculated in a Pulley System with Friction?
- Peter P.
- · Replies 3 ·
How Does the Diameter of Constriction Affect a Paint Sprayer's Operation?
- Coushander
- · Replies 1 ·
Free Fall(gravity) with speed of sound in air
- Patrick817
- · Replies 1 ·
How Does Intensity Change with Distance from a Vibrating Source?
- Coushander
- · Replies 16 ·
Ohmic Devices and Conceptual Circuit Question
- brimister47
- · Replies 5 ·
Torque, mass has to be found with centripetal force
- 2&1/2MEN
- · Replies 1 ·
Can Gauss' Law Be Applied to a Non-Uniformly Charged Solid Sphere?
- lonewolf219
- · Replies 3 ·
Can Hot Beverages Stay Hot at High Altitudes?
- Mullet
- · Replies 2 ·
How Is the Average Force on a Shell Calculated Using the Work Energy Theorem?
- razzmatazz
- · Replies 1 ·
What is the internal resistance of the power supply
- Lizziecupcake
- · Replies 3 ·
Question Relating Electric Field and Capacitance
- rabcdred
- · Replies 8 ·
Instantaneous Velocity from the graph
- Absolutism
- · Replies 4 ·
Photon and proton traveling at 0.485c: how far apart after one year?
- dingo_d
- · Replies 2 ·
Lightning strikes energy question
- Miike012
- · Replies 1 ·
How Does Air Resistance Affect the Velocity of a Falling Object?
- jfrank1034
- · Replies 12 ·
What is the Lamp's Mass and Cord Tension in an Accelerating Elevator?
- phillia
- · Replies 5 ·
Plane flying north in wind and man on escalator
- iJamJL
- · Replies 3 ·
How to Calculate Pressure Difference in Aorta with Ideal Fluid Model
- Rron
- · Replies 1 ·
Charge density higher on sharp ends
- Quantumkid
- · Replies 1 ·
What is the frictional force at constant velocity?
- moonbase
- · Replies 2 ·
Show that the following force is conservative
- nbram87
- · Replies 10 ·
How to solve SUVAT problem without using relative velocity
- rollcast
- · Replies 5 ·
Electrostatics -Electric Field and Potential
- abelthayil
- · Replies 2 ·
Simple(?) Speed bump and centripetal force problem
- kc0ldeah
- · Replies 7 ·
Newtons Law of Cooling - Determine rate of cooling
- Nokesy459
- · Replies 9 ·
What is friction's formula and what does each part mean?
- -Physician
- · Replies 11 ·
Does uniform motion always have uniform velocity?
- zoomzoom
- · Replies 2 ·
How Does the Velocity of a Carpet's Axis Change as It Unrolls?
- AlchemistK
- · Replies 3 ·
Block launched from compressed spring reaches what height
- mrphobio
- · Replies 1 ·
Running after a bus. acceleration problem
- LearninDaMath
- · Replies 2 ·
Finding Electric Field with Gauss's Law on a Sphere with Varying Charge Density
- Alouette
- · Replies 5 ·
Why does solving for collision time give two positive solutions?
- LearninDaMath
- · Replies 13 ·